2216445206520 has 128 divisors (see below), whose sum is σ = 6853530631680. Its totient is φ = 573174336000.

The previous prime is 2216445206501. The next prime is 2216445206567. The reversal of 2216445206520 is 256025446122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1612626 + ... + 2652065.

It is an arithmetic number, because the mean of its divisors is an integer number (53543208060).

Almost surely, 2^{2216445206520} is an apocalyptic number.

2216445206520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2216445206520 is an abundant number, since it is smaller than the sum of its proper divisors (4637085425160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2216445206520 is a wasteful number, since it uses less digits than its factorization.

2216445206520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264837 (or 4264833 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 2216445206520 in words is "two trillion, two hundred sixteen billion, four hundred forty-five million, two hundred six thousand, five hundred twenty".